giải bpt

K

kysybongma

[TEX]2\sqrt{x-1}-\sqrt{x+2}>x-2[/TEX]

\Leftrightarrow[TEX]3(x-2)>(x-2)(2\sqrt{x-1}+\sqrt{x+2})[/TEX]
 
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N

niemkieuloveahbu

[TEX]DK: x\geq1\\ BPT \Leftrightarrow 4(x-1)-(x+2)>(x-2)(2\sqrt{x-1}+\sqrt{x+2})\\ \Leftrightarrow (x-2)(3-2\sqrt{x-1}-\sqrt{x+2})>0[/TEX]

Chia trường hợp ra nhé,:)
 
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